SPIRAL ventilation ducts are produced in diameters range 80 mm to 1600 mm of galvanized, aluminium and stainless steel sheet. Standard length of spiral tube - 3 metres.
They are often referred to as "spiro" ducts/tubes because one of the most popular brands of tubeformers (spiral duct machines) are manufactured by Spiro International S.A.
For special requirements eg. swimming pools or food industry buildings we can offer spiral ducting made of stainless steel sheet with the addition of molybdenum.
The thickness of sheet for typical elements depends on the diameter and equals to 0.5 - 1.5 mm. Spirally wound ducts of more than 250 mm in diameter are additionally corrugated to increase their negative pressure resistance.
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Galvanised round spiral ducts
Circular ducting are manufactured from galvanized (standard), stainless steel,
|Galvanised round spiral ducts|
|SRGL||Plain seam-welded ducts|
Plain butt-welded ducts
The available sheet thickness ranges from 0.5 to 0.9 mm. Butt
|Plain butt-welded ducts|
|SPR-K||Stainless steel round spiral ducts|
Copper sheet round spiral ducts
Round spiral ducts available in diameters from 80 to 1600mm from diameter 250mm they are provided with external corrugations to increase their stiffness and resistance to negative pressure. Although, as a standard, we sell air ducts made of galvanised steel sheet, we offer also ones made of copper, taking into consideration its antimicrobial benefits. Due to the fact that copper is known to suppress the growth of bacteria, fungi and molds, copper ductwork is a perfect solution for hospitals, schools, healthcare facilities like nursing homes and laboratories.
|Copper sheet round spiral ducts|
Round spiral perforated ducts
SPRP Round spiral perforated ducts are available in diameters from 80 to 630mm;
Perforated spiral ducts can be used in duct silencer production and for diffuser construction.
|Round spiral perforated ducts|
Boxes for spiro ventilation ducts
The WOOD-BOX are used for transportation of spiral round ducts.
High durability allows for stacking the boxes as well as to place
|Boxes for spiro ventilation ducts|
Storage racks for spiro ventilation ducts
The racks are designed for storage and shipping of SPIRAL round ducts. They can accommodate ducts in the nominal diameter range of 80 mm to 315 mm. If the box capacity needs to be maximized, ducts of max. 3 different nominal diameters can be boxed by placing smaller tubes into larger ones. An empty rack can be collapsed and stacked to save space in warehouses and on transport vehicles.
|Storage racks for spiro ventilation ducts|